Search Results

You are looking at 1 - 2 of 2 items for

  • Author: THELMA E. ROWELL x
Clear All Modify Search
Free access

THELMA E. ROWELL

Summary.

The variation in the follicular phase of the menstrual cycles of seven parous female baboons was studied. The preliminary part of the follicular phase, before oestrus, was longer under conditions of psychosocial stress. Perineal swelling was increased when the normally groupliving female was placed in tactile isolation, and the colour of the swelling changed from bright pink to a pale grey-pink. The latter change was permanently reversed on return to the group. The former was temporarily reversed, but swellings continued to be abnormally large after a long succession of menstrual cycles in which pregnancy was prevented. There was some evidence that the swellings return to normal, after a pregnancy and lactation interval. The implications of these findings are discussed.

Free access

ETHEL N. SASSENRATH, THELMA E. ROWELL and A. G. HENDRICKX

The pioneer study of Carpenter (1942) characterized oestrous behaviour in rhesus monkeys by criteria related to increased sexual behaviour and by `increased aggressiveness . . . and wounds'. Subsequent studies of rhesus monkeys by Bernstein (1963) and Lindburg (1971) have confirmed a mid-cycle increase in behavioural arousal which appears to coincide with ovulation (as judged from subsequent pregnancy data). Loy (1970) now reports an increase in so-called `estrous behavior' both perimenstrually and at mid-cycle in free-ranging rhesus monkeys. Rowell (1963) has observed increased perimenstrual aggressive interaction, but differentiates increased aggression received during the premenstrual week from increased aggression exerted on cage mates during the week after the onset of menstruation.

The present study is an attempt to relate